Genetic & enviroment. Hereditary, smoking, genetics, dietary, old age, hypertension, diabetes.
Can be many... But the biggest is smoking. Diabetes and obesity can have an affect as well. Genetics plays into who will get atherosclerosis. Stopping smoking is the best thing someone can do to be able to lower their health risks.
Multifactorial. You can inherit a genetic predisposition to these disorders. Risk factors such as hypertension, diabetes, obesity, smoking, poor dietary habits, cholesterol level, and inactivity can increase your risk.
Cholesterol. Buildup of cholesterol and calcium in the walls of the arterial system, leading to narrowing and complete blockages, which causes symptoms of ischemia. Factors which contribute would be diabetes, high blood pressure, obesity, etc.
All BIOLOGIC. Smoking second hand smoke family history- congenital factors diet cholesterol obesity almost no non biologic!
Atherosclerosis. Depends on one's personal risk and modifying them. Smoking, obesity, hypertension, hyperlipemia, diabetes, family history. Heart attack: simply, one blocks the feeding artery to part of the heart muscle and low flow, or no flow causes ischemia which cause death of the heart cells, which is a heart attack! Myocardial infarction is the medical term. Ekg and lab tests show the damage.
Multiple. Usually genetic, diabetes, high blood pressure, obesity, high cholesterol or lipids, diet and lack of exercise. Gradual deposition of fat in the arteries and slow formation of atheroma leads to narrowing and blockage.